baber/WOPTO huggingface dataset:
Patent GB-117867-A (GB)
Title: Improvements in and relating to Systems of Electric Transmission.
IPC: H02J3/30
Filed: 1917-10-23
Abstract: 117,867. British Thomson - Houston Co., (General Electric Co.). Oct. 23, 1917. Systems for alternating-current motors only.- In electric transmission systems wherein a directcurrent hoist motor M is supplied from a dynamo C driven by an induction machine I, the slip of which is varied by resistances in the secondary circuit under the control of current responsive means, the controlling means are eliminated when the machine I runs regeneratively, driven by the dynamo G acting as a motor which is then supplied from the motor M generating as the load overhauls. The controlling means consist of a torque motor 12 energized by the current coils 13 in the main supply lines, and adjusting a water resistance 14. The generator and motor fields 2, 9 are supplied from a constaut source B, a rheostat being included in the generator field circuit. When the rheostat is moved to allow the load to overhaul rapidly the motor M, two contacts 27, 28 are bridged and a circuit through an electro-magnet 29 is completed; this electro-magnet acts on the torque motor to keep the resistance at its minimum value despite any rise in the current generated by the machine I. In a modification, the extra contacts 27, 28 on the rheostat are dispensed with and a reverse power relay is used energized by coils in the supply mains; when the machine I generates, the relay closes the circuit for the electro-magnet 29 and also short-circuits the secondary windings of the machine.
Patent GB-228063-A (GB)
Title: Improvements in and relating to automatic advertising cabinets
IPC: G09F13/12
Filed: 1924-06-27
Abstract: 228,063. Booth, W. R. June 27, 1924. Optical toys.-In display apparatus in which two scenes appear superimposed, one being seen by direct vision through an inclined transparent sheet and the other by reflection therein, the Whole device is contained within a single chamber A and the scenes consist respectively of a transparent design T and a solid object S. The design T is picked out in an opaque background and is removably slid into place at the bottom of a reflecting shade B containing a flashing lamp L. The object S is illuminated by light entering by the viewing-opening E, supplemented if desired by a light within the chamber. The positions of transparency T and object S may be interchanged, or tht transparency placed at the bottom of the chamber. The chamber may be of cylindrical form, in which case the inclined sheet G would be elliptical in shape.
Patent GB-865543-A (GB)
Title: Improvements in or relating to fuel injection spark-ignition internal combustion engines
IPC: F02M69/00
Filed: 1958-05-15
Abstract: 865,543. Fuel injection engines. ANDRE CITROEN S.A. May 15, 1958 [Oct. 10, 1957], No. 15612/58. Class 7(3). In a spark ignition fuel injection engine with a turbulence chamber 3, a stratified mixture is formed in the cylinder by injecting the fuel into the intake pipe at a point adjacent the intake valve shortly after opening the intake valve. The pure air sucked in immediately the valve opens is followed first by a rich mixture formed by the injected fuel and finally by pure air after injection ceases, the resulting stratified mixture being compressed into the chamber 3 and sparkignited. The fuel may be injected so as to impinge upon a localised portion of the valve head, producing a different stratification pattern. Specification 779,978 is referred to.
Patent GB-662806-A (GB)
Title: Improvements in welding guns
IPC: B23K9/173
Filed: 1949-06-13
Abstract: 662,806. Uniting by fusion. AIR REDUC- .TION CO., Inc. June 13, 1949 [June 29, 1948], No. 15688/49. Class 83 (iv). In an arc welding gun with a continuously fed inert gas-shielded electrode 5, a nozzle 54 providing an annular gas stream at least twice 'as thick as the diameter of the electrode, forms an extension to an annular passage between a cylindrical casing 41 and an internal current pick-up shoe 56 of a length at least twice the diameter of the electrode. The electrode is fed to the gun through a T-fitting 11 by electric motor-driven rollers controllable from a switch 19 disposed in the pistol grip 15 of the gun and 'operating a solenoid which, on switching the motor on or off, simultaneously switches on or off a solenoid-operated valve controlling the supply of helium, argon or the like to a connection 13 on the fitting 11. One end of the fitting 11 is sealed by a rubber washer 60 and the other is connected to flexible conduit 12 through which the electrode and gas pass to the gun. The gun comprises a casing 41 of non-conducting moulded material with an internal conducting shoe 56 supported in a conducting block 42 which is connected to a welding current conductor 17 and to the conduit 12 and has circumferentially spaced passages for the gas. The forward end of the gun has an extension 52 of non-conducting material carrying the nozzle 54 and supporting the shoe 56 within a spacer 58 having circumferentially spaced passages 59 on the outer periphery for directing the gas axially. The nozzle 54 is preferably of copper and has cooling fins 55, and the internal diameter is such that the annular gap around the shoe 56 is more than twice the diameter of the electrode. The pick-up shoes are interchangeable for electrodes of different diameters, the internal diameter of the shoe being in each case slightly larger than the diameter of the electrode. A guard 51 is provided to shield the operator's hand.
Patent GB-407036-A (GB)
Title: Improved manufacture of organo lead compounds
IPC: C07F7/24
Filed: 1932-06-04
Abstract: <PICT:0407036/IV/1> Lead alkyls are prepared by subjecting the vapour of a hydrocarbon or oxygenated organic compound to heat treatment at 500 DEG -1000 DEG  C. under reduced pressure, rapidly bringing the product into contact with finely-divided lead at a lower temperature, and finally condensing the organo-lead compounds, all the operations being conducted in the substantial absence of air.  The starting materials do not include purely aromatic compounds; they may comprise aliphatic hydrocarbons such as ethane, propane, butane, heptane, decane, isobutane, petroleum ether, ligroin, gasoline, kerosene, gas oil, ethylene, propylene, butene-1, butene-2 or isobutylene; cyclic hydrocarbons such as cyclopentane, cyclohexane or methylcyclohexane; aralkyl hydrocarbons such as ethylbenzene; aldehydes such as acetaldehyde, propionic aldehyde or heptaldehyde; ketones such as acetone, methylethyl ketone or dipropyl ketone; ethers such as dimethylether or diethylether; acids such as acetic or propionic acids, or their esters; and alcohols such as amyl alcohol.  These organic compounds appear to decompose during the heat treatment with the formation of reactive alkyl radicles having a short independent existence.  An apparatus for carrying out the reaction comprises a tube of refractory material of which one portion F has a heating coil 17 disposed around it, whilst the other portion G is provided with a cooling jacket 27 and a well 18 into which metallic lead is introduced. The well may then be heated in order to distil the lead, which condenses in a fine state of subdivision on the walls of the portion G.  The organic compound comprising the starting material is placed in a container 10 provided with a heating or cooling jacket 12 and a neck 13 in which is disposed a needle valve 14. Condensers 20 and 21 for the product are provided, and an oil pump 26 for producing the desired vacuum.  The cross-sectional area of the condensers and of the portion G are substantially the same as that of F.  In operation, the needle valve 14 is opened and the apparatus exhausted of air by the pump 26; the valve is then closed to the extent to produce the requisite low pressure of about 2-4 mm. of mercury and the compound, e.g. gasoline, drawn through the decomposition zone F heated to 800 DEG --1000 DEG  C., then through the water-cooled zone G containing the lead, and finally through the condensers which are maintained at temperatures of say -80 DEG  C. and -190 DEG  C. respectively.  The condensate may be distilled to recover the lead alkyls.  The samples are prepared by the use of acetone, heptane and ether; that from heptane contains substantial amounts of the methyl and ethyl derivatives of lead, whilst the other two mainly comprise the methyl derivative.  The Specification as open to inspection under Sect. 91 refers also to the use of the following metals:--zinc, tin, bismuth, arsenic, antimony, cadmium and beryllium.  This subject-matter does not appear in the Specification as accepted.
Patent GB-716462-A (GB)
Title: Rotary constant delivery pump
IPC: F04C14/26
Filed: 1952-06-23
Abstract: 716,462. Rotary pumps. GEMMER MANUFACTURING CO. June 23, 1952 [July 12, 1951], No. 15779/52. Class 110(2) A pump for delivering liquid at substantially uniform velocity, when driven at variable speeds, has one or more rotary impellers and a valve K<SP>2</SP> in the pump outlet chamber which opens a by-pass A'' to suction upon increasing delivery pressure. A small orifice K<SP>3</SP> allows a small flow from the delivery A<SP>5</SP> to the suction even when the valve closes the by-pass passage A<SP>9</SP>. As applied to internally-meshing gear pumps, the Figures show inner rotors H, keyed to a shaft F and outer rotors I journalled in recesses B, B<SP>1</SP> each having a bushing J of bearing material. Liquid from a suction A<SP>2</SP> passes through the pumps to a recess A<SP>1</SP> and delivery A<SP>5</SP>. As pressure builds up on the face of the valve K<SP>2</SP>, it is moved to the right to open the by-pass A<SP>9</SP> leading back to the pump inlet A<SP>8</SP>. The recesses A<SP>1</SP>, A<SP>2</SP> register with further recesses D<SP>1</SP>, E<SP>1</SP>. A second by-pass valve N<SP>1</SP>, between suction and delivery sides, may be fitted.
Patent GB-1372759-A (GB)
Title: Detecting the course of and or cleaning underground or undersea  pipes or tubes
IPC: F17D5/00
Filed: 1972-12-07
Abstract: 1372759 Pipe-line pigs AMG ZUURBIER Ltd 7 Dec 1972 [6 April 1972] 15854/72 Heading F2N A pig for detecting the course of an underground or undersea pipe-line, or for detecting the position of a blockage in the pipe-line, or for cleaning the pipe-line comprises a cylindrical body 1 mounting seals 4, for engaging the internal periphery of the pipe-line, and a radio transmitter 5 strapped around the body 1 between the seals 4. The transmitter shown comprises seven units (only three shown), each having a concave face for seating on the body and containing either batteries or coil units or electronic components. The seven units are electrically interconnected by a flexible cable 14. The unit containing the electronic components includes an external on/off switch. The straps 10 holding the transmitter to the body 1 are of stainless steel and are provided with end buckles. One or both of the seals 4 may incorporate scrapers for pipe-line cleaning. In use, the pig is propelled through the pipe-line by compressed air.
Patent GB-1458731-A (GB)
Title: Ignition apparatus for internal combustion engine
IPC: F02P5/15
Filed: 1974-04-10
Abstract: 1458731 Ignition systems HITACHI Ltd 10 April 1974 [13 April 1973 8 Aug 1973] 15969/74 Heading FIB Ignition control apparatus for an I.C. engine comprises a rotor 1, Fig. 1, rotating with the engine crank-shaft, and a pick-up 2 generating a rotational angle signal as shown in (a) Fig. 3, a first delay signal generator produces a delay signal lagging by a predetermined time T, and fed to a measuring circuit 4 measuring the time interval from the end of the delay pulse by a predetermined coefficient m, and producing an output signal measuring a time interval by a predetermined coefficient m 2  from the rotational angle pulse, a comparator 5 producing an output signal as in (d), Fig. 3, when the output from 4 reaches a predetermined level R, the output from a second time delay signal generator, being de-energized after the lapse of a predetermined time T 2 ' as shown in (d'). The output (d) from the comparator 5 may be applied to the switching diode (115), Fig. 2A (not shown), of a known capacitor discharge ignition system. Alternatively, in a known induction type ignition circuit, the output of the second time delay signal generator 6, (d'), is used to de-energize a switch (210), Fig. 2B (not shown), previously energized by the output of comparator 5. Again, sufficiently high ignition spark energy is maintained even in the case of an excessive voltage drop of the battery power supply by inserting a first time interval generator (8), Fig. 6 (not shown), between the generator 3 and measuring circuit 4 generating a signal corresponding to variation of the voltage across the battery. A second variable time interval generator (9) replaces the second time delay signal generator 6. Again, Fig. 10, a rise of the pick-up signal from 13 acts to trigger a signal from a first variable time interval generator 14 of a width dependent on the magnitude of the battery voltage. A first constant current circuit 15 operates from the fall of the generator 14 output signal to the fall of the pickup signal to linearly charge a capacitor 16. The capacitor 16 then linearly discharges through a second constant current circuit 17. When the voltage across the capacitor is reduced to zero, a second variable time interval generator 18 is triggered to produce pulses of a width in response to the voltage across the battery, the output of the generator 18 being applied to the base of a transistor 19 to make it conduct to control the ignition coil 20. Particular circuit diagrams are provided for the various embodiments, as are digital applications of the circuits, Figs. 5, 9 and 13 (not shown).
Patent GB-612548-A (GB)
Title: Improvements in or relating to dry-shaving apparatus
IPC: B26B19/42
Filed: 1946-05-27
Abstract: 612,548. Dry shavers. NAAMLOOZE. VENNOOTSCHAP PHILIP'S GLOEILAMPENFABRIEKEN. May 27, 1946, No. 16007. Convention date, March 14, 1942. [Class 131] In a dry shaver comprising a stationary,. apertured cutting plate and a movable cutting member, the part of the cutting plate adapted to co-operate with the cutting member having a substantially flat surface, the cutting plate is provided on its face-contacting surface with one or more skin-bulging ribs. As shown in Fig. 1, the cutting member 3 rotates beneath the apertured cutting plate 2 the ribs 4 increasing in thickness from the centre and merging at 5 into the cylindrical outer wall 6. The cutting plate may be rectangular and the apertures slit-shaped the ribs being provided between the slits and being identical with the other intervening parts of the cutting plate except in thickness. In a further modification the cutting plate may have a central depressed portion surrounded by an annular track for the cutting member.
Patent GB-798482-A (GB)
Title: Improvements relating to parachute and like release mechanism
Inventor: CONWAY HUGH GRAHAM
IPC: B64D17/38
Filed: 1955-06-06
Abstract: 798,482. Hook fastenings; electrically remotely - controlled fastenings. SHORT BROS. & HARLAND, Ltd.. May 25, 1956 [June 6, 1955], No. 16137/55. Classes 44 and 89(2) [Also in Group XXI] A hook-mechanism, e.g. for the release of parachutes from aircraft, is of the kind in which pivoted-hooks 26, 27, Fig. 1, are maintained in closed-position by a togglelinkage 15, 16 which, until broken by a rotary electromagnet 1, holds roller-means 22...24 in locking-engagement between facing abutment-surfaces 25 of the hook, the magnet-armature 9 being mechanically balanced to prevent gravitational and other shocks substantially axially of the mechanism from breaking the toggle-linkage. The mechanism has a body 14 presenting a stop 15a against which the linkage is held by a roller 12 on armature 9. When the magnet is energized, the armature turns and delivers a blow to surface 19 of link 15 which turns about pivot 17 and raises the rollermeans, which is guided by surfaces 35 in the body, and the rollers 23 ride between spring-pressed levers 49. The pivotedhooks are opened by springs 31. The armature may be turned manually by a plunger 53 having a side-arm 55. The body is mounted in a housing 58, Fig. 8, having a flange 59 bolted, e.g. to the aircraft-structure. Secured to the flange is a fitting 60 screwed to receive a seating 61 for a loadshackle 62 terminating in a roller 66 which is engaged between the hooks 26, 27. A single roller may be used instead of rollers 23.
Patent GB-1090829-A (GB)
Title: Output speed control system for a variable capacity friction clutch
IPC: F16D25/0638
Filed: 1966-04-13
Abstract: 1,090,829. Clutch control. TWIN DISC CLUTCH CO. April 13, 1966 [May 10, 1965], No. 16218/66. Headings F2C, F2D and F2L. The engaging pressure supplied to a clutch actuating servomotor 4 is controlled by a valve 70 responsive to the speed of an output shaft 2 so that the clutch C slips to maintain the speed of the output shaft 2 constant. The spool of the valve 70 is urged right by a spring 75 to connect a pressure supply line 61 through a line 38 to the clutch servo chamber 3. Speed responsive pressure in a line 62 acts on the righthand end of the valve spool and opposes the spring 75 to close the pressure supply line when the output speed attains a predetermined value. The pressure in the line 62 is determined by an exhaust valve 60 controlled by speed responsive means 50 rotating with the output shaft. As shown a centrifugal head in a chamber 53 moves right a piston 50 and valve plate 63 to throttle the exhaust from line 62 as output speed rises. The speed responsive means may be a mechanical speed responsive governor. The valve spool has differential area lands to stabilize operation. The loading on the spring 75 may be adjusted by a screw 76 to adjust the predetermined output speed. A pump 5 driven by a motor M supplies liquid to the supply line 61 at a pressure determined by a relief valve 68, the exhaust from which is supplied through a line 44 to the chamber 53 and to lubricate and cool the clutch.
Patent GB-379402-A (GB)
Title: Improvements in escapement mechanism of clocks and the like
IPC: G04B18/04
Filed: 1931-06-04
Abstract: 379,402. Escapements. GARRARD ENGINEERING & MANUFACTURING CO., Ltd. and SLADE, H. V., Newcastle Street, Swindon, Wiltshire. June 4, 1931, No. 16259. [Clasa 139.] To adjust the engagement of the anchor pallets m with the escape wheel f, the anchor arbor g is pivoted in a cock a adjustably fixed to the frame plate c carrying the escape wheel shaft. Adjustment is effected by rotation of a screw j, k, l, engaging the usual pendulum suspension fork d engaging a slot e in plate c and carried by the cock a. The screw head k abuts against the plate c and supports members d, a, the latter being secured to plate c by screws h passing through slots i therein and engaging holes in the cock a.
Patent GB-673572-A (GB)
Title: Improvements in cartridge wads
IPC: F42B7/08
Filed: 1950-06-29
Abstract: 673,572. Cartridge wads. SOC. FRANCAISE DE MUNITIONS DE CHASSE DE TIR & DE GUERRE. June 29, 1950. [June 30, 1949] No. 16295/50. Class 9 (i). A cartridge wad is constructed as a hollow, preferably cylindrical, member of such material and wall thickness that it is deformable under the pressure developed within the cartridge on firing, one or more holes 5 being provided in the side wall of the member through which the enclosed air can escape. Fig. 1 shows a cartridge case 1 containing a propellent charge 2 and shot 3 separated by the wad 4 of cardboard, light metal or a flexible plastic material or a combination of these materials. The wad may be coated with a lubricant. Elastic material such as glass fibre may be inserted in the wad. The wad 4 is a tube with inwardly bent ends bearing against discs 4a which may be glued to the tube. Fig. 2 shows a wad in which the closure 4b is integral with the tube while the closure 4c fits on to the tube like a cupshaped lid. Both end closures may be cupshaped and glued to the tubular wall.
Patent GB-476588-A (GB)
Title: Preparation of thiazthionium chlorides
Filed: 1936-06-11
Abstract: Thiazthionium chlorides are made by reacting a primary aromatic amine or its hydrochloride, having at least one hydrogen atom ortho to the amino group, with thionyl chloride and sulphur monochloride in such amounts that at least 1 molecule of each is present for each molecule of amine, or by reacting an aromatic thionylamine (e.g. a mono- or di-thionylamine, prepared from an amine and thionyl chloride and containing the group --N=S=O) having at least one hydrogen atom ortho to the thionylamine group or to each of the thionylamine groups, with sulphur monochloride, if desired in the presence of hydrogen chloride as a catalyst. The above reactions may be carried out in excess sulphur monochloride when nuclear chlorination occurs, or in an inert organic solvent such as ethylene dichloride, o-dichlorobenzene, or carbon tetrachloride.  Primary amines specified are aniline, the toluidines, xylidines, phenetidines, naphthylamines and primary diamines such as benzidine, dianisidine, and p-phenylenediamine. In examples: (1) p-phenetidine is reacted with thionyl chloride and sulphur chloride in ethylene chloride; (2) thionyl-p-phenetidine is reacted with sulphur chloride in o-dichlorbenzene; (3) aniline hydrochloride; (4) b -naphthylamine; and (5) benzidine are reacted with thionyl chloride and sulphur chloride in o-dichlorbenzene; (6) o-toluidine hydrochloride is reacted with thionyl chloride in excess sulphur monochloride.  The Specification as open to inspection under Sect. 91 refers to the production of the corresponding thiazthionium bromides by using sulphur monobromide and either thionyl chloride or thionyl bromide.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1384979-A (GB)
Title: Extrusion die for blowing plastic film
IPC: B29C48/10
Filed: 1973-04-05
Abstract: 1384979 Extruding blown film J J FARRELL 5 April 1973 16397/73 Heading B5A To prevent weld lines in extruded blown film an extrusion die has an annular outlet formed between a body 22 and a core 24, the core having a material supply passage 30 connected by branches 34 to a circumferential recess 36 in which is disposed an annular plate 78 having distribution passages which displace material from branches 34 both radially and angularly to mix the material and distribute it around the entire circumference of the die outlet. The annular plate has spiral grooves 92, Fig. 3, on one face as shown or both faces (Fig. 12, not shown) the depth of which decreases outwardly to zero while leakage between the grooves increases outwardly from zero due to the divergence of the grooved face of the plate from the opposing face of the recess 36, Fig. 11, or another similar plate 80, Fig. 1. The other plate 80 has spiral grooves of similar, different or opposite pitch.  In Fig. 1 two different materials are fed concentrically to grooved plates in two circumferential recesses 36 and 110, the two annular streams of material merging at a shallow angle to prevent mixing. A ring accommodated in a recess of front plate 78 is adjustable by bolts 106 to regulate the front stream, and the rear stream is adjusted by a ring 118 around the rear plate 114. The front end of passage 30 is blocked by a tapered plug 32 retained by screws 62 which will yield at excessive pressures to permit plug 32 to lift and relieve the pressure. A safety cover 62 is fitted over the bolts and a cover 68 is fitted over that. Compressed air is supplied through passages 74, 76 into cover 68 and escapes through hole 72 to inflate the extruded tube. In Fig. 11 a die for a single layer sheet has heating coils 174 and a flexible outer die lip 178 which is adjusted by a partly split wedge ring 182.